Released into circulation: 1 July 2013
Metal composition: the core of the coin is made of an alloy consisting of 92% copper, 6% aluminium and 2% nickel, while the ring is made of an alloy exhibiting a silver lustre, which consists of 75% copper and 25% nickel.
Diameter and weight: the coin is shaped as a regular dodecagon, with the circumscribed circle's diameter of 32 mm, and weighs 12.75g. The core of the coin is 18mm in diameter and weighs 4.05g. The ring is 18mm in inner diameter and weighs 4.05g.
Motif on the obverse: the core of the coin features an image of a beehive symbolising the European Union. The beehive consists of twenty-seven cells, each comprising a star as a symbol of a European Union Member State. The newly added, twenty-eighth cell, comprises a square with a star on it, symbolically representing the accession of the Republic of Croatia to the European Union as a new, twenty-eighth member. The inscription "REPUBLIKA HRVATSKA ČLANICA EUROPSKE UNIJE" is laid out circularly within the ring of the coin. The lower central part of the ring bears the date "1 VII 2013".
Motif on the reverse: The central part of the coin core features the denomination numeral "25". The outlines of the number "25" reveal an image of a marten turned to the right, with the marten's body integrated with the denomination numeral. Positioned centrally at the lower part of the coin ring is the coat of arms of the Republic of Croatia, bordered at the left by a blooming laurel branch and at the right by a common oak branch with acorns. The upper part of the ring bears the inscription "REPUBLIKA HRVATSKA".
Occasion commemorated: the Republic of Croatia becoming a full member of the European Union, 1 July 2013
Items issued: 20,000